#646181
Closest named color: Slate (#516572). oklch(50.8% 0.05 288.8), rgb(100, 97, 129).
Aa
White text reads best on this color (5.88:1).
About this color
#646181 is a medium-dark, muted purple. In OKLCH its lightness is 51%, its chroma 0.050 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.042 away. White text reads best on it, at 5.88:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.56:1 |
| White text | 5.88:1 |
Values
| HEX | #646181 |
| RGB | rgb(100, 97, 129) |
| HSL | hsl(246, 14%, 44%) |
| OKLCH | oklch(50.8% 0.05 288.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #646181 | 5.88:1 | AA | Lc -84.7 | Fine for body text |
| Black text on #646181 | 3.56:1 | AA large text | Lc 24.6 | Dividers and decoration only |
| #646181 text on white | 5.88:1 | AA | Lc 79.4 | Fine for body text |
| #646181 text on black | 3.56:1 | AA large text | Lc -22.4 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9E9EE
oklch(93.5% 0.007 286.3)
-
Step 200
200
#D8D8E2
oklch(88.5% 0.014 286.1)
-
Step 300
300
#BFBED0
oklch(80.8% 0.025 288.4)
-
Step 400
400
#9F9DB8
oklch(70.7% 0.039 288.8)
-
Step 500
500
#8885A6
oklch(63.1% 0.049 289.1)
-
Step 600
600
#726E92
oklch(55.5% 0.055 289.6)
-
Step 700
700 (this color)
#646181
oklch(50.8% 0.05 288.8)
-
Step 800
800
#4E4B65
oklch(42.6% 0.043 289.7)
-
Step 900
900
#413F52
oklch(37.7% 0.032 289.6)
-
Step 950
950
#262530
oklch(27% 0.02 289.1)
#646181 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #596582 | 0.019 |
| Deuteranopia (no green cones) | #596480 | 0.018 |
| Tritanopia (no blue cones) | #5E666C | 0.043 |
| Achromatopsia (no color) | #646464 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646181
#646181
oklch(50.8% 0.05 288.8)
- #686846
#686846
oklch(50.8% 0.05 108.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #646181, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.042
- Dusty Grape #545775 ΔE 0.042
- Muted Purple #805B87 ΔE 0.050
- Dusty Purple #825F87 ΔE 0.051
- Dusky Blue #475F94 ΔE 0.052
- Dim Gray #696969 ΔE 0.052
- Dusk #4E5481 ΔE 0.054
- Metallic Blue #4F738E ΔE 0.054
Use #646181 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.